Bulk Update Request: Cleaning up the train-related tags

Script

mass update steam_locomotive -> steam_train
create implication diesel-electric_locomotive (30) -> diesel_locomotive (26)
mass update diesel_locomotive -> diesel_train
mass update electric_locomotive -> electric_train
create implication steam_locomotive (96) -> locomotive (218)
create implication diesel_locomotive (26) -> locomotive (218)
create implication electric_locomotive (41) -> locomotive (218)
mass update railcar -> railroad_car
mass update freight_railcar -> freight_car
create implication freight_car (0) -> railroad_car (0)
mass update box_railcar -> boxcar
create implication boxcar (19) -> freight_car (0)
mass update passenger_railcar -> passenger_car
create implication passenger_car (0) -> railroad_car (0)
create implication passenger_car (0) -> passenger_train (21)
create implication passenger_train (21) -> public_transportation (3315)
create alias subway (764) -> rapid_transit (425)
remove implication cable_tram (1) -> urban_rail_transit (142)
remove implication tram (70) -> urban_rail_transit (142)
remove implication monorail (22) -> urban_rail_transit (142)
remove implication funicular (6) -> urban_rail_transit (142)
remove implication cable_tram (1) -> urban_rail_transit (142)